handlers.go

package main

import (
	"fmt"
	"html/template"
	"net/http"
	"strconv"
)

func (app *application) home(w http.ResponseWriter, r *http.Request) {
	if r.URL.Path != "/" {
		http.NotFound(w, r)
		return
	}
	// Initialize a slice containing the paths to the two files. It's important
	// to note that the file containing our base template must be the *first*
	// file in the slice.
	files := []string{
		"./ui/html/base.tmpl.html",
		"./ui/html/partials/nav.tmpl.html",
		"./ui/html/pages/home.tmpl.html",
	}
	// Use the template.ParseFiles() function to read the template file into a
	// template set. If there's an error, we log the detailed error message and use
	// the http.Error() function to send a generic 500 Internal Server Error
	// response to the user.
	ts, err := template.ParseFiles(files...)
	if err != nil {
		app.errorLog.Println(err.Error())
		http.Error(w, "Internal server Error ;(", 500)
		return
	}
	// Use the ExecuteTemplate() method to write the content of the "base"
	// template as the response body.
	err = ts.ExecuteTemplate(w, "base", nil)
	if err != nil {
		app.errorLog.Println(err.Error())
		http.Error(w, "Internal server error", 500)
	}
}

func (app *application) snippetView(w http.ResponseWriter, r *http.Request) {
	id, err := strconv.Atoi(r.URL.Query().Get("id"))
	if err != nil || id < 1 {
		http.NotFound(w, r)
		return
	}

	fmt.Fprintf(w, "Display a specific snippet with ID %d...", id)
}

func (app *application) snippetCreate(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		w.Header().Set("Allow", http.MethodPost)
		http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
		return
	}

	w.Write([]byte("Create a new snippet..."))
}